// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/views/widget/desktop_aura/x11_desktop_window_move_client.h"

#include <X11/Xlib.h>

#include "base/debug/stack_trace.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/x/x11_util.h"
#include "ui/events/event.h"
#include "ui/gfx/screen.h"

namespace views {

X11DesktopWindowMoveClient::X11DesktopWindowMoveClient()
    : move_loop_(this)
    , host_(NULL)
{
}

X11DesktopWindowMoveClient::~X11DesktopWindowMoveClient() { }

void X11DesktopWindowMoveClient::OnMouseMovement(
    const gfx::Point& screen_point,
    int flags,
    base::TimeDelta event_time)
{
    gfx::Point system_loc = screen_point - window_offset_;
    host_->SetBounds(gfx::Rect(system_loc, host_->GetBounds().size()));
}

void X11DesktopWindowMoveClient::OnMouseReleased()
{
    EndMoveLoop();
}

void X11DesktopWindowMoveClient::OnMoveLoopEnded()
{
    host_ = NULL;
}

////////////////////////////////////////////////////////////////////////////////
// DesktopWindowTreeHostLinux, aura::client::WindowMoveClient implementation:

aura::client::WindowMoveResult X11DesktopWindowMoveClient::RunMoveLoop(
    aura::Window* source,
    const gfx::Vector2d& drag_offset,
    aura::client::WindowMoveSource move_source)
{
    window_offset_ = drag_offset;
    host_ = source->GetHost();

    source->SetCapture();
    bool success = move_loop_.RunMoveLoop(source, host_->last_cursor());
    return success ? aura::client::MOVE_SUCCESSFUL : aura::client::MOVE_CANCELED;
}

void X11DesktopWindowMoveClient::EndMoveLoop()
{
    move_loop_.EndMoveLoop();
}

} // namespace views
